Connection Module Angle Adjustment for Battery Array Tolerance
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Solution Overview
Problem
In power storage modules for vehicles, displacement between power storage element arrays due to pitch tolerance leads to inefficiencies in connecting electrode terminals, as existing pitch-adjusting mechanisms fail to effectively absorb such displacements.
Innovation Solution
A connection module with angle-adjusting parts, including flexible ribs and second hinge linking parts, that allow for the adjustment of inclination angles of inter-array bus bar housing parts to absorb displacement between power storage element arrays, ensuring proper connection and series configuration despite tolerance-related misalignment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If pitch adjusting means is used to absorb electrode pitch tolerance, then the connection between adjacent power storage elements is improved, but displacement occurs between power storage element arrays deteriorating connection efficiency
Solution Approach 1:
The inter-array bus bar housing parts are designed with rotational capability around hinge linking parts, allowing dynamic adjustment of inclination angles to accommodate displacement between power storage element arrays. This dynamic mechanism enables the connection structure to adapt to varying positions while maintaining connection efficiency.
Solution Approach 2:
The inclination angle of inter-array bus bar housing parts is made variable through the angle adjusting part, allowing the parameter to change according to the actual displacement between arrays. This parameter adjustment compensates for accumulated tolerance and maintains optimal connection conditions.
2Power
If multiple power storage element arrays are arranged to achieve desired output voltage, then the power storage module capacity is improved, but accumulated tolerance causes displacement between arrays reducing assembly efficiency
Solution Approach 1:
The hinge linking parts enable rotational movement of inter-array bus bar housing parts, creating a dynamic adjustment mechanism that compensates for accumulated tolerance in multi-array configurations. This allows efficient assembly despite displacement caused by stacking multiple arrays for higher voltage.
Solution Approach 2:
The angle adjusting part acts as an intermediary mechanism between the bus bar housing parts and inter-array bus bars, mediating the displacement caused by accumulated tolerance. It provides the necessary adjustment capability to maintain proper alignment and connection efficiency in multi-array power storage modules.
3Reliability
If rigid bus bar housing parts are used to ensure stable connection, then connection reliability is improved, but inability to absorb displacement reduces adaptability
Solution Approach 1:
The system combines rigid bus bar housing parts for stable electrical connection with hinge linking parts that enable rotational movement. This hybrid approach maintains connection reliability while providing the adaptability needed to absorb displacement between power storage element arrays through angle adjustment.
Solution Approach 2:
The connection structure is segmented into rigid components (bus bars, housing parts) for stable electrical connection and flexible components (hinge linking parts, angle adjusting mechanisms) for displacement absorption. This segmentation allows each part to perform its specialized function optimally.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution effectively absorbs displacement between power storage element arrays, maintaining efficient connection and series configuration of power storage elements, thereby improving the assembly and operational efficiency of the connection module.
Implementation Method 1
a plurality of first hinge linking parts that links the bus bar housing parts in a direction where the power storage elements are arranged, and expands and contracts in the direction where the power storage elements are arranged
Implementation Method 2
an angle adjusting part adjusting an inclination angle of each of the inter-array bus bar housing parts from a direction perpendicular to the direction where the power storage elements are arranged in a plan view
Data Source
AI summary
A connection module to be assembled to a power storage element stack including power storage element arrays in each of which power storage elements including electrode terminals of a positive electrode and a negative electrode are arranged. The connection module includes: a plurality of bus bars that electrically connects the electrode terminals between the adjacent power storage elements; a plurality of bus bar housing parts each housing each of the bus bars; a plurality of first hinge linking parts that links the bus bar housing parts and expands and contracts in a direction where the power storage elements are arranged; a plurality of inter-array bus bars that electrically connects the electrode terminals of power storage element arrays; a plurality of inter-array bus bar housing parts each housing each of the inter-array bus bars; and angle adjusting part adjusting an inclination angle of each of the inter-array bus bar housing part.